The JUSTOCK 3650SD G2.1 Brushless Motor is a high-quality motor designed for use in RC cars. Compliant with ROAR and IFMAR rules, this motor features a heat-resistant magnet attached aluminum case, double insulated windings, high precision bearings, and a strong rotor structure to guarantee outstanding performance and super durability. The built-in Hall sensor non-adjustable end bell, combined with a high precision and balanced rotor, guarantees smooth and linear power on demand. A silicone O-ring seal fitted between the end bell and stator helps to conduct inner heat to the motor case and prevent dust from entering the HALL sensor.